99.9% or more of all people are biologically male or female, at least that is what Google told me. So, this is my opinion of the LBG part of LBGT. You know what type of people you are attracted to. You know who gets you horny. Those people may be the opposite sex, the same sex, or both sexes or perhaps you are not attracted to anyone at all which would be asexual (Note: We could add an A to LBG for Asexual). So, I have no issue with the sanity of people that Identify as LBG or A.
Unless you are a hermaphrodite, your chromosomes and what’s between your legs determine your sex, male (XY) or female (XX). If you are biologically female, you have no frame of reference to think that you are a man born in a woman’s body because you have always been the biological sex that you are. If you are biologically male, you also have no frame of reference to think that you are a woman born in a man’s body because you have always been the biological sex that you are. If you think you are something that you are clearly not, that is evidence of being mentally ill. Being Transgender is a totally different category than Lesbian, Bisexual, Gay, or Asexual.
A Girly Man is still a man. A Manly Woman is still a woman. Thinking that you are a man if you are a woman or thinking that you are a woman when you are a man is a mental illness. Being a Lesbian, Bisexual, Gay, or Asexual is not a mental illness.